Welcome Kate and Paddington!!
Edit: I didn't get very far on your blog. But please don't give him any fruits or vegetables. They are very bad for chins and can lead to health problems or even death. If you do some reading on this forum you'll find a complete list of safe treats. Any treat should be given in moderation 1 -2 pieces a week. Healthy treats include rosehips, unfrosted shredded wheat, plain cheerios.
Chins really don't need treats, its more for our enjoyment as owners. Chins only need pellets, hay, water, and some people like to give special supplements. If you're looking to add variety to his life get him a wide variety of wood sticks and toys.
Those are healthy and he can have as many as you want to give him.